In Blender 2.80, when i try to bake a fluid simulation using flip fluids, it gives me the error 'Cannot find fluid engine library: libblpyfluid.dll'
According to a note on the the GitHub repository, the Microsoft Visual Studio Compiler is not officially supported:


  WARNING: Compilation using MSVC (Microsoft Visual Studio Compiler) is experimental and not officially supported. Building with MSVC may result in errors and performance issues.


When building the FLIP Fluids addon for Windows, the MinGW compiler should be used to avoid potential errors and to ensure the simulator runs correctly.